body {background-image: url(images/bg.jpg);}

.centrado {
  position: absolute;
  top: 50%; 
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
}

h3 {color: #2784c6; text-align: center; font-family: 'Open Sans', sans-serif; margin-bottom: 0;}
h4 {color: #2784c6; text-align: center; font-family: 'Open Sans', sans-serif; margin: 0;}

ul li {list-style: none; color: #2784c6; font-family: 'Open Sans', sans-serif;}

a {color: #2784c6; text-decoration: none;}
a:hover {color: #555; text-decoration: none;}

.black {color: #000;}